docs: sanitize Lynx smoke README

[xuefei1313]

🤔 This is a ...

• Site / documentation update

🔗 Related issue link

N/A

🐞 Bugserver case id

N/A

💡 Background and solution

The Lynx smoke README exposed internal-only package names, URLs, schemas, host details, diagnostics, and implementation notes.

This PR:

• removes internal-only and unpublished information;
• replaces setup and preview guidance with the public Lynx quick-start workflow;
• keeps only the local smoke project's runnable commands, coverage, acceptance checklist, and public integration guidance;
• avoids claiming unverified one-to-one mappings between internal and public packages.

No runtime code or API behavior changes.

📝 Changelog

Language	Changelog
🇺🇸 English	Sanitize the Lynx smoke README and use public Lynx guidance.
🇨🇳 Chinese	精简 Lynx smoke README，移除内部信息并改用公开 Lynx 指引。

☑️ Self-Check before Merge

• Doc is updated/provided or not needed
• Demo is updated/provided or not needed
• TypeScript definition is updated/provided or not needed
• Changelog is provided or not needed

Validation:

• git diff --check
• sensitive-term scan for internal package names, schemas, domains, fixed addresses, and unpublished concepts
• rush build -t @visactor/vrender (Node.js 20.19.6)
• pre-push rush test --only tag:package (Node.js 20.19.6)

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🚀 Summary

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🔍 Walkthrough

copilot:walkthrough